multiple maxbotix LVEZ on one UNO?

very good sketch! I think you should try to use the pwm mode of the maxbotix sensor. It's not much different from what you are doing now. You don't have to daisy chain it either. They won't interfere. They are on different sides If the door right? I'll walk you through it. Just post some code using the links I gave you. If you don't understand I'll help you. I know it's frustrating, but I'm here to help. We'll make it happen.